Andy,
I have seen cars with the inter-fender cut away without any problems. Ron's FJ
turbo had bars added , but IMHO I don't think its necessary. I would extend
your roll cage to the middle of the engine compartment to stiffen the frame and
cut out the inter-fenders. I have a street car with the "X" frame removed and
it does not show much in the way of flexing (chipped paint in the door jams
...) That could be removed and replaced with light weight tubing or aluminum.
There are some "box" strengthens on the body under the fender I have also seen
removed. I would even consider removing part of the front cross member like is
done for SR and KA installations. These frame modification would allow easier
engine removal and removing the transmission without pulling the engine. ;-)
besides reducing weight.
Phil
67.5 SPL311 FJ20
69 SRL311 FJ20
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